js.todoModel.js Maven / Gradle / Ivy
/*
*
* * Copyright 2015 Skymind,Inc.
* *
* * Licensed under the Apache License, Version 2.0 (the "License");
* * you may not use this file except in compliance with the License.
* * You may obtain a copy of the License at
* *
* * http://www.apache.org/licenses/LICENSE-2.0
* *
* * Unless required by applicable law or agreed to in writing, software
* * distributed under the License is distributed on an "AS IS" BASIS,
* * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* * See the License for the specific language governing permissions and
* * limitations under the License.
*
*/
/*jshint quotmark:false */
/*jshint white:false */
/*jshint trailing:false */
/*jshint newcap:false */
var app = app || {};
(function () {
'use strict';
var Utils = app.Utils;
// Generic "model" object. You can use whatever
// framework you want. For this application it
// may not even be worth separating this logic
// out, but we do this to demonstrate one way to
// separate out parts of your application.
app.TodoModel = function (key) {
this.key = key;
this.todos = Utils.store(key);
this.onChanges = [];
};
app.TodoModel.prototype.subscribe = function (onChange) {
this.onChanges.push(onChange);
};
app.TodoModel.prototype.inform = function () {
Utils.store(this.key, this.todos);
this.onChanges.forEach(function (cb) { cb(); });
};
app.TodoModel.prototype.addTodo = function (title) {
this.todos = this.todos.concat({
id: Utils.uuid(),
title: title,
completed: false
});
this.inform();
};
app.TodoModel.prototype.toggleAll = function (checked) {
// Note: it's usually better to use immutable data structures since they're
// easier to reason about and React works very well with them. That's why
// we use map() and filter() everywhere instead of mutating the array or
// todo items themselves.
this.todos = this.todos.map(function (todo) {
return Utils.extend({}, todo, {completed: checked});
});
this.inform();
};
app.TodoModel.prototype.toggle = function (todoToToggle) {
this.todos = this.todos.map(function (todo) {
return todo !== todoToToggle ?
todo :
Utils.extend({}, todo, {completed: !todo.completed});
});
this.inform();
};
app.TodoModel.prototype.destroy = function (todo) {
this.todos = this.todos.filter(function (candidate) {
return candidate !== todo;
});
this.inform();
};
app.TodoModel.prototype.save = function (todoToSave, text) {
this.todos = this.todos.map(function (todo) {
return todo !== todoToSave ? todo : Utils.extend({}, todo, {title: text});
});
this.inform();
};
app.TodoModel.prototype.clearCompleted = function () {
this.todos = this.todos.filter(function (todo) {
return !todo.completed;
});
this.inform();
};
})();